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CVE-2026-16624

Quick assessment

Affected
Cal.com Cal.diy
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cal.com Cal.diy是Cal.com公司的一款日程管理软件。 Cal.diy 6.2.0之前版本存在授权问题漏洞，该漏洞源于对webhook teamId创建缺乏授权，可能导致任何经过身份验证的用户通过未经验证的teamId注入在任意团队上创建webhook，然后窃取预订数据。

AI Predicted 7.5 Difficulty: Easy EPSS 0.40% · P31

Possible ATT&CK Techniques 1 AI

T1114.002 · Remote Email Collection

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cal.com Cal.diy < 6.2.0 affected
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I. Basic Information for CVE-2026-16624

Vulnerability Information
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Vulnerability Title
CVE-2026-16624
Source: CVE Program / CVE List V5
Vulnerability Description
Cal.com OSS ships lacks authorization on webhook teamId creation, allowing any authenticated user to create a webhook on any team via unvalidated teamId injection, then steal booking data, including fields like organizer/attendee emails and custom responses, and conditionally video-call passwords, by triggering webhook delivery.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Cal.com Cal.diy 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cal.com Cal.diy是Cal.com公司的一款日程管理软件。 Cal.diy 6.2.0之前版本存在授权问题漏洞，该漏洞源于对webhook teamId创建缺乏授权，可能导致任何经过身份验证的用户通过未经验证的teamId注入在任意团队上创建webhook，然后窃取预订数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cal.com Cal.diy 0 ~ 6.2.0 -

II. Public POCs for CVE-2026-16624

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III. Intelligence Information for CVE-2026-16624

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Vendor Advisories for CVE-2026-16624 (1)

Security Blog Posts for CVE-2026-16624 (1)

IV. Related Vulnerabilities

Same product: Cal.diy
Same vendor: Cal.com

V. Comments for CVE-2026-16624

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